Dokyuu Hentai HxEros

Synopsis

From Seven Seas: When the alien Kiseichuu descend on Earth, they have one goal: eradicate the human race. They do so by feeding off the very passion that drives humans to reproduce, their H-Energy! Retto Enjo is recruited onto a team of elite, sexy superheroes assembled to save Earth. Living in a dorm with the four beautiful women of the HXEROS team, Retto finds himself caught up in a web of erotic intrigue where the whole world is at stake! Extraterrestrials and ecchi will collide in this ultimate battle for humanity’s debauchery! [Dear Sir Hannibal](https://www.mangaupdates.com/series/6g8x5en/dear-sir-hannibal) included in Vol 3.

Synopsis & details from MangaUpdates